10. Speciation occurs when:
a. two populations become geographically isolated
b. enough differences accumulate between two populations that they can no longer interbreed
C. gene mutations accumulate
d. all of the above
10. Speciation occurs when:
a. two populations become geographically isolated
b. enough differences accumulate between two populations that they can no longer interbreed
C. gene mutations accumulate
d. all of the above